diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index df9807c..9d54873 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -56,7 +56,7 @@ repos:
       - id: oca-gen-addon-readme
         args:
           - --addons-dir=.
-          - --branch=17.0
+          - --branch=18.0
           - --org-name=camptocamp
           - --repo-name=odoo-cloud-platform
           - --if-source-changed
diff --git a/base_attachment_object_storage/__init__.py b/base_attachment_object_storage/__init__.py
index 1e8071d..899bcc9 100644
--- a/base_attachment_object_storage/__init__.py
+++ b/base_attachment_object_storage/__init__.py
@@ -1,26 +1,2 @@
 from . import models
-from odoo.http import Stream
 
-
-old_from_attachment = Stream.as_attachment
-
-
-@classmethod
-def from_attachment(cls, attachment):
-    if attachment.store_fname and attachment._is_file_from_a_store(
-        attachment.store_fname
-    ):
-        self = cls(
-            mimetype=attachment.mimetype,
-            download_name=attachment.name,
-            conditional=True,
-            etag=attachment.checksum,
-        )
-        self.type = "data"
-        self.data = attachment.raw
-        self.size = len(self.data)
-        return self
-    return old_from_attachment(attachment)
-
-
-Stream.as_attachment = from_attachment